These sights (front and back) are great. If you have a flat top AR and just some cheap sights, these are the way to go. As the AR guys know, don't expect the plastic not to melt when your rocking and rolling with this guy on the gas block. You will quickly have a polymer mess. If your just plinking and having a good time, these sights won't melt. Just be careful on your cyclic rate. I personally use these as backup to a P223 scope.